Home / 90,724.05-125,151.28-53,909.35

Finding the Fourth Proportional to 90,724.05, 125,151.28 and 53,909.35

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Solution

The fourth proportional to 90,724.05, 125,151.28 and 53,909.35 is: 74,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724.05 : 125,151.28 = 53,909.35 : x
  2. Step 2: Convert to fraction form
    90,724.05/125,151.28 = 53,909.35/x
  3. Step 3: Cross multiply
    90,724.05x = 125,151.28 × 53,909.35
  4. Step 4: Simplify right side
    90,724.05x = 6,746,823,708.82
  5. Step 5: Solve for x
    x = 6,746,823,708.82/90,724.05
  6. Step 6: Final answer
    x = 74,366.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.